We have a "trip value" system, similar to MESA's but not as bad. Most of our trip values are within 5 minutes (+/-) block, some are better some are slighty worse. Back in my days at Mesa, credit was 10-15 minutes less than block, you'd fly 95 hours and get paid for 85 and that was the norm back then.
We also have no trip value legs where you are paid straight block. To get over block pay you need to go over 15 minutes of the trip value.
In a nutshell, depending on the trips you can walk away with some or give some free flying to the company. Last trip I did was 25:15 block, paid 26:55 credit for a trip that was scheduled for 26:33 block. I came in under an extra hour of block.
Not all trips are that way though, some are backwards with 27 block and 26:30 credit, it all depends on where you are flying to.
The only way you make more credit than block is highspeeds, on average your block and credit at this company is close. Most lines are blocked at 86 or better with similar credit, guarantee is 75 hours.